McGhie and Barker (1984) collected 100 slugs from the species Limax maximus around Hamilton, New Zealand. They were preserved in a relaxed state, and their length in mm and weight in gm were recorded. Thirty of the observations are shown below. The full data are in the Minitab worksheet slug.mtw.

(a) Plot weight on length using Minitab. What do you notice about the shape of the relationship?

(b) Often when we have a nonlinear relationship, we can transform the variables by taking logarithms and achieve linearity. In this case, weight is related to volume which is related to length times width times height.
Taking logarithms of weight and length should give a more linear relationship. Plot log(weight) on log(length) using Minitab. Does this relationship appear to be linear?

(c) From the scatterplot of log(weight) on log(length) can you identify any points that do not appear to fit the pattern?